Pi Supply
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PaPiRus Assembly Tips And Gotchas
In this tutorial we are going to look at some tips and gotchas about the PaPiRus HAT and the
PaPiRus Zero ePaper diplays.
This is what's covered in this tutorial:
Connect the screen to the PaPiRus board
Damaged screen
Connect the GPIO adapter
Install the pogo pin connector
Install the push buttons
Barcode effect
Software info
Bi-adhesive pads
Refresh rates and screen lifespan
Full and partial updates
Connect the screen to the PaPiRus board
These instructions apply to both the PaPiRus HAT and the PaPiRus Zero
To open the connector at the back of the PaPiRus board you need to lift the dark brown clip on
CN1 by gently allow it to rotate over its hinges until it is perpendicular to the board. The brown part
clips on the beige one so it is normal for it to oppose slight resistance when opening the connector.
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Pi Supply
Home of the Raspberry Pi Power Supply Switch
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The cable terminal is the same for every screen. With the connector open, slide the cable on the
beige part of the connector and gently push it so that it reaches underneath the brown clip. Make
sure that the cable is inserted evenly so that when the clip is rotate back into the closed position
the two dots shown in the picture are parallel with the connector.
This is one of the main causes of the screen not operating correctly so make sure you pay
particular care when plugging the screen in CN1.
Once the cable is in the correct position, rotate the brown clip into the closed position. You will
notice that it will oppose some resistance but this is absolutely normal.
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Damaged screen
The screens are extremely fragile so be very careful when handling them and fix them on the board
only when your project is quite "defined". In alternatively to the bi-adhesive provided you can use a
little bit of blue tack to keep the screen in place whilst you are still developing your idea so that you
can easily lift the screen off before removing the PaPiRus from the Raspberry Pi. In this way you'll
make sure that you will never exercise too much pressure on the screen itself.
If the damage is not obvious you can run
which will tell you if screen is functioning correctly or not.
We are now offering
replacement screens, follow this link
to get a replacement or simply a different
size from the one you have.
Connect the GPIO adapter
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Note that these instructions only apply to the PaPiRus HAT
If you need to place the PaPiRus HAT board elsewhere in your project than on the Raspberry Pi
GPIO header then you can use the
GPIO adapter
which plugs in CN4. This connector replicates
the GPIO on a practical flat cable to provide more flexibility in positioning the screen for your
project.
To open the connector slide out the black clip. Push the flat cable in completely then push the black
clip back in. The flat cable will have to be plugged in so that the blue part always faces upwards as
in the picture.
Install the pogo pin connector
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Note that these instructions only apply to the PaPiRus HAT
The pogo pin will either be installed on CN13 or CN15 depending on whether you will be using your
PaPiRus on a Raspberry Pi B+, 2B or a Raspberry Pi 3B.
Place the pogo pin in either of those pads from underneath as shown in the picture. By keeping the
pogo pin in place perfectly perpendicular on the PCB proceed to solder it from the top side of the
board. Use non lead free solder if possible as that's generally easier to work with. If you have
a temperature adjustable controlled solder station you should be setting it to about 300° Celsius.
Install the push buttons
Note that these instructions only apply to the PaPiRus HAT
Place the buttons on the top side of the PCB so that the legs completely go through and the bottom
of the switch is touching the PCB.
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DSP and ARM Processors
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